Packet #14956200

Database ID:	14956200
Mesh Packet ID:	`0xb5972633` Used for correlation across gateways
Timestamp:	2026-04-07 23:38:20 UTC
From Node:	Meshtastic ce40 (ce40)
To Node:	R3BAR C:41D8 (R3BR)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Medved GW8 (MED8)
Channel:	LongFast
RSSI:	-91 dBm
SNR:	-2.25 dBm
Hop Info:	6/7 hops Start: 7, Limit: 1

Long Name:	Meshtastic ce40
Short Name:	ce40
Node ID:	!0400ce40
MAC Address:	rKcEAM5A
Hardware:	HELTEC_V3

Raw Packet Analysis

Complete field breakdown and MQTT privacy/exposure analysis

Packet Structure

MQTT Packet Flow:
ServiceEnvelope (MQTT layer) → MeshPacket (Mesh layer) → Decoded Payload (Application data)

Total Size:	80 bytes
Gateway:	!fa68e0c0
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	6 / 7

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 1 more...

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!fa68e0c0` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (80 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`67161664` Source node ID	uint32
`to`	`2794865112` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`80` bytes	size
`hop_limit`	`1` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`6` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-91.0` dBm Signal strength at gateway	int32
`rx_snr`	`-2.25` dB Signal quality at gateway	float
`rx_time`	`1775594299` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	Not set	enum
`delayed`	Not set	enum
`channel`	Not set	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`140` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1775594300.906446` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Direct Message

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
✓ Gateway node ID tracked

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (6 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!fa68e0c0`
Signal Metrics:	RSSI: -91.0 dBm SNR: -2.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	80 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!0400ce40", "long_name": "Meshtastic ce40", "short_name": "ce40", "macaddr": "rKcEAM5A", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!fa68e0c0", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 67161664, "to": 2794865112, "id": 3046581811, "rx_time": 1775594299, "rx_snr": -2.25, "rx_rssi": -91, "hop_limit": 1, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 140, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213034303063653430120f4d65736874617374696320636534301a04636534302206aca70400ce40282b42207f372ce38ab2a91c5aa522f510add33978ebff2aabc8acf1c16013b631379f254800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!0400ce40", "long_name": "Meshtastic ce40", "short_name": "ce40", "macaddr": "rKcEAM5A", "hw_model": "HELTEC_V3", "public_key": "fzcs44qyqRxapSL1EK3TOXjr/yqryKzxwWATtjE3nyU=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (80 bytes)

0a09213034303063653430120f4d65736874617374696320636534301a04636534302206aca70400ce40282b42207f372ce38ab2a91c5aa522f510add33978ebff2aabc8acf1c16013b631379f254800

Hex Analysis:

Size:	80 bytes
Format:	Protobuf (Protocol Buffers)
Encoding:	Binary with varint and length-delimited fields

This is the raw protobuf-encoded payload as received from MQTT. The structure follows the Meshtastic protobuf schema definitions.

Packet #14956200 Success

Packet Information

Payload Data

Decoded Data: